GMS软件在立岗水源地地下水资源评价中的应用研究

Application of GMS Software in Evaluation of Groundwater Resources in Ligang Water Source Area

地下水数值模拟GMS软件在地下水资源评价中得到广泛应用。本文以银川立岗水源地地下水资源评价为例,在分析研究区水文地质条件的基础上,利用GMS地下水模拟软件,确定研究区模型概化条件,建立地下水数值模型,计算研究区现状开采条件下和规划开采条件下的补给量与排泄量,并预测分析在规划开采条件下开采20年的水文变化。通过摸拟验证发现:在现状开采条件下,开采目的层得到的补给量是39.42万m^3/a,排泄量是41.25万m^3/a,呈微弱的负均衡;设计开采条件下,补给量是1 100.05万m^3/a,排泄量为1 132.69万m^3/a,并动用少量的储存量,按照开采方案以3万m^3/d作为立岗水源地允许开采量可满足开采要求。

Groundwater numerical simulation GMS software is widely used in the evaluation of groundwater resources. This paper takes Yinchuan Ligang water source groundwater resources evaluation as an example. Based on the analysis of the hydro- geological conditions of the study area, the GMS groundwater simulation software is used to determine the model generalization conditions in the study area, and a groundwater numerical model is established to calculate the current conditions of the mining conditions in the study area. And planning for the amount of recharge and excretion under mining conditions, and predicting the analysis of hydrological changes for 20 years under planned mining conditions. Through simulation tests, it was found that, under current mining conditions, the recharge amount of the target layer is 394 200 m3/a and the excretion is 415 000 m3/a, showing a weak negative balance ; under the design and mining conditions, the recharge is 1 100.05. Million m3/a, excretion of 11. 326 9 million m3/a, and use a small amount of storage, according to the mining plan to 30 000 m3/d as a water source to allow the amount of mining to meet the mining requirements.